:root {
  color-scheme: light;
  --ink: #17212b;
  --muted: #6d7985;
  --line: #e6e9ee;
  --paper: #ffffff;
  --canvas: #f4f6f8;
  --accent: #4a63e7;
  --accent-dark: #3349c5;
  --danger: #d84955;
  --warning: #b87813;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }
body { margin: 0; background: var(--canvas); color: var(--ink); }
.page-shell { max-width: 1180px; margin: 0 auto; padding: 42px 24px 64px; }
.hero { display: flex; justify-content: space-between; align-items: flex-start; gap: 24px; margin-bottom: 28px; }
.eyebrow { margin: 0 0 8px; color: var(--accent); font-size: 11px; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; }
h1, h2, p { margin-top: 0; }
h1 { max-width: 680px; margin-bottom: 12px; font-size: clamp(30px, 5vw, 52px); line-height: 1; letter-spacing: -.045em; }
h2 { margin-bottom: 0; font-size: 21px; letter-spacing: -.02em; }
.subtitle { max-width: 680px; color: var(--muted); font-size: 16px; line-height: 1.55; }
.hero-mark { display: grid; place-items: center; min-width: 104px; height: 104px; border: 1px solid #cfd6ff; border-radius: 28px; background: #ebeeff; color: var(--accent); font-size: 34px; font-weight: 850; line-height: .9; }
.hero-mark span { display: block; margin-top: -12px; font-size: 12px; letter-spacing: .1em; text-transform: uppercase; }
.hidden { display: none !important; }
.panel { padding: 24px; border: 1px solid var(--line); border-radius: 22px; background: var(--paper); box-shadow: 0 12px 35px rgba(23, 33, 43, .04); }
.status-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 16px; }
.status-card { padding: 18px; border: 1px solid var(--line); border-radius: 16px; background: rgba(255,255,255,.8); }
.status-card span, .status-card strong { display: block; }
.status-card span { margin-bottom: 8px; color: var(--muted); font-size: 12px; }
.status-card strong { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 17px; }
.layout-grid { display: grid; grid-template-columns: minmax(0, 1.05fr) minmax(0, .95fr); gap: 16px; }
.utility-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px; margin-top: 16px; }
.panel-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; margin-bottom: 22px; }
.save-state, .spinner { color: var(--muted); font-size: 12px; }
label { display: block; margin-bottom: 15px; font-size: 13px; font-weight: 700; }
input { display: block; width: 100%; margin-top: 7px; padding: 12px 13px; border: 1px solid #dce1e8; border-radius: 11px; background: #fbfcfd; color: var(--ink); font: inherit; outline: none; }
input:focus { border-color: var(--accent); box-shadow: 0 0 0 3px rgba(74,99,231,.13); }
small { display: block; margin-top: 6px; color: var(--muted); font-size: 11px; font-weight: 400; line-height: 1.4; }
.two-columns { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; }
.check-row { display: flex; align-items: center; gap: 9px; font-weight: 600; }
.check-row input { width: 16px; height: 16px; margin: 0; accent-color: var(--accent); }
.warning-check { padding: 12px; border: 1px solid #f1ddae; border-radius: 12px; background: #fffaf0; color: #79510d; }
.form-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 22px; }
.button { padding: 12px 16px; border: 0; border-radius: 11px; cursor: pointer; font: inherit; font-weight: 750; }
.button:disabled { cursor: wait; opacity: .65; }
.button.primary { background: var(--accent); color: white; }
.button.primary:hover { background: var(--accent-dark); }
.button.secondary { border: 1px solid #dce1e8; background: white; color: var(--ink); }
.alert { margin-bottom: 16px; padding: 13px 16px; border-radius: 12px; font-size: 13px; }
.alert.danger { border: 1px solid #f3c2c6; background: #fff4f4; color: #a92f3a; }
.muted { color: var(--muted); line-height: 1.5; }
.result-summary { padding: 14px; border-radius: 13px; background: #f7f8fa; font-size: 13px; }
.actions-list { margin-top: 14px; }
.action-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 0; border-bottom: 1px solid var(--line); }
.action-row strong, .action-row span { display: block; }
.action-row strong { margin-bottom: 4px; font-size: 13px; }
.action-row span { color: var(--muted); font-size: 11px; }
.pill { flex: none; padding: 5px 8px; border-radius: 999px; font-size: 10px; text-transform: uppercase; letter-spacing: .04em; }
.pill-red { background: #ffe4e5; color: #a92f3a; }
.pill-yellow { background: #fff0c9; color: #8a5b0e; }
.test-form { display: flex; gap: 10px; }
.test-form input { flex: 1; margin-top: 0; }
.test-result { margin-top: 14px; padding: 14px; border-radius: 13px; background: #f7f8fa; font-size: 13px; }
.test-result.good { border: 1px solid #bde5cd; background: #f1fbf5; color: #216b3b; }
.test-result.warning { border: 1px solid #f1ddae; background: #fffaf0; color: #79510d; }
.logs-list { max-height: 270px; overflow: auto; }
.log-row { display: grid; grid-template-columns: 90px 1fr; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--line); font-size: 11px; }
.log-row time { color: var(--muted); }
.log-row strong, .log-row span { display: block; }
.log-row strong { margin-bottom: 3px; font-size: 12px; }
.log-kind { color: var(--accent); text-transform: uppercase; font-size: 9px; letter-spacing: .07em; }
code { padding: 2px 5px; border-radius: 5px; background: #f0f2f5; font-size: .9em; }

@media (max-width: 820px) {
  .status-grid, .layout-grid { grid-template-columns: 1fr 1fr; }
  .layout-grid, .utility-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .page-shell { padding: 28px 16px 48px; }
  .hero { flex-direction: column; }
  .hero-mark { min-width: 86px; height: 86px; border-radius: 22px; }
  .status-grid { grid-template-columns: 1fr; }
  .panel { padding: 18px; border-radius: 17px; }
  .test-form { flex-direction: column; }
}